Generalized the hint for whether the application gets a mouse event when clicking on the window to activate it, and is now named SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH.

The behavior is defined to not receive the click event, and this hint allows you to override that.

include/SDL_hints.h

@@ -233,16 +233,27 @@ extern "C" {
 #define SDL_HINT_GRAB_KEYBOARD              "SDL_GRAB_KEYBOARD"
 
 /**
-*  \brief  A variable controlling whether relative mouse mode is implemented using mouse warping
-*
-*  This variable can be set to the following values:
-*    "0"       - Relative mouse mode uses raw input
-*    "1"       - Relative mouse mode uses mouse warping
-*
-*  By default SDL will use raw input for relative mouse mode
-*/
+ *  \brief  A variable controlling whether relative mouse mode is implemented using mouse warping
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - Relative mouse mode uses raw input
+ *    "1"       - Relative mouse mode uses mouse warping
+ *
+ *  By default SDL will use raw input for relative mouse mode
+ */
 #define SDL_HINT_MOUSE_RELATIVE_MODE_WARP    "SDL_MOUSE_RELATIVE_MODE_WARP"
 
+/**
+ *  \brief Allow mouse click events when clicking to focus an SDL window
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - Ignore mouse clicks that activate a window
+ *    "1"       - Generate events for mouse clicks that activate a window
+ *
+ *  By default SDL will ignore mouse clicks that activate a window
+ */
+#define SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH "SDL_MOUSE_FOCUS_CLICKTHROUGH"
+
 /**
  *  \brief Minimize your SDL_Window if it loses key focus when in fullscreen mode. Defaults to true.
  *
@@ -575,13 +586,6 @@ extern "C" {
 */
 #define SDL_HINT_MAC_BACKGROUND_APP    "SDL_MAC_BACKGROUND_APP"
 
-/**
- *  \brief Allow mouse click events when clicking to focus an SDL window
- *
- *  This hint only applies to Mac OS X.
- */
-#define SDL_HINT_MAC_MOUSE_FOCUS_CLICKTHROUGH "SDL_MAC_MOUSE_FOCUS_CLICKTHROUGH"
-
 /**
  * \brief Android APK expansion main file version. Should be a string number like "1", "2" etc.
  *

src/video/cocoa/SDL_cocoawindow.m

@@ -1118,7 +1118,11 @@ SetWindowStyle(SDL_Window * window, NSUInteger style)
 
 - (BOOL)acceptsFirstMouse:(NSEvent *)theEvent
 {
-    const char *hint = SDL_GetHint(SDL_HINT_MAC_MOUSE_FOCUS_CLICKTHROUGH);
+    const char *hint = SDL_GetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH);
+    if (!hint) {
+        /* Check older hint for backwards compatibility */
+        hint = SDL_GetHint("SDL_MAC_MOUSE_FOCUS_CLICKTHROUGH");
+    }
     return hint && *hint != '0';
 }
 @end